vi.c

这是linux下运行的mysql软件包,可用于linux 下安装 php + mysql + apach 的网络配置

/*	$NetBSD: vi.c,v 1.20 2004/08/13 12:10:39 mycroft Exp $	*/

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Christos Zoulas of Cornell University.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <config.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>


/*
 * vi.c: Vi mode commands.
 */
#include "el.h"

private el_action_t	cv_action(EditLine *, int);
private el_action_t	cv_paste(EditLine *, int);

/* cv_action():
 *	Handle vi actions.
 */
private el_action_t
cv_action(EditLine *el, int c)
{

	if (el->el_chared.c_vcmd.action != NOP) {
		/* 'cc', 'dd' and (possibly) friends */
		if (c != el->el_chared.c_vcmd.action)
			return CC_ERROR;

		if (!(c & YANK))
			cv_undo(el);
		cv_yank(el, el->el_line.buffer,
			    el->el_line.lastchar - el->el_line.buffer);
		el->el_chared.c_vcmd.action = NOP;
		el->el_chared.c_vcmd.pos = 0;
		el->el_line.lastchar = el->el_line.buffer;
		el->el_line.cursor = el->el_line.buffer;
		if (c & INSERT)
			el->el_map.current = el->el_map.key;

		return (CC_REFRESH);
	}
	el->el_chared.c_vcmd.pos = el->el_line.cursor;
	el->el_chared.c_vcmd.action = c;
	return (CC_ARGHACK);
}

/* cv_paste():
 *	Paste previous deletion before or after the cursor
 */
private el_action_t
cv_paste(EditLine *el, int c)
{
	char *ptr;
	c_kill_t *k = &el->el_chared.c_kill;
	int len = k->last - k->buf;

	if (k->buf == NULL || len == 0)
		return (CC_ERROR);
#ifdef DEBUG_PASTE
	(void) fprintf(el->el_errfile, "Paste: \"%.*s\"\n", len, k->buf);
#endif

	cv_undo(el);

	if (!c && el->el_line.cursor < el->el_line.lastchar)
		el->el_line.cursor++;
	ptr = el->el_line.cursor;

	c_insert(el, len);
	if (el->el_line.cursor + len > el->el_line.lastchar)
		return (CC_ERROR);
	(void) memcpy(ptr, k->buf, len +0u);
	return (CC_REFRESH);
}


/* vi_paste_next():
 *	Vi paste previous deletion to the right of the cursor
 *	[p]
 */
protected el_action_t
/*ARGSUSED*/
vi_paste_next(EditLine *el, int c __attribute__((__unused__)))
{

	return (cv_paste(el, 0));
}


/* vi_paste_prev():
 *	Vi paste previous deletion to the left of the cursor
 *	[P]
 */
protected el_action_t
/*ARGSUSED*/
vi_paste_prev(EditLine *el, int c __attribute__((__unused__)))
{

	return (cv_paste(el, 1));
}


/* vi_prev_big_word():
 *	Vi move to the previous space delimited word
 *	[B]
 */
protected el_action_t
/*ARGSUSED*/
vi_prev_big_word(EditLine *el, int c)
{

	if (el->el_line.cursor == el->el_line.buffer)
		return (CC_ERROR);

	el->el_line.cursor = cv_prev_word(el->el_line.cursor,
	    el->el_line.buffer,
	    el->el_state.argument,
	    cv__isWord);

	if (el->el_chared.c_vcmd.action != NOP) {
		cv_delfini(el);
		return (CC_REFRESH);
	}
	return (CC_CURSOR);
}


/* vi_prev_word():
 *	Vi move to the previous word
 *	[b]
 */
protected el_action_t
/*ARGSUSED*/
vi_prev_word(EditLine *el, int c __attribute__((__unused__)))
{

	if (el->el_line.cursor == el->el_line.buffer)
		return (CC_ERROR);

	el->el_line.cursor = cv_prev_word(el->el_line.cursor,
	    el->el_line.buffer,
	    el->el_state.argument,
	    cv__isword);

	if (el->el_chared.c_vcmd.action != NOP) {
		cv_delfini(el);
		return (CC_REFRESH);
	}
	return (CC_CURSOR);
}


/* vi_next_big_word():
 *	Vi move to the next space delimited word
 *	[W]
 */
protected el_action_t
/*ARGSUSED*/
vi_next_big_word(EditLine *el, int c)
{

	if (el->el_line.cursor >= el->el_line.lastchar - 1)
		return (CC_ERROR);

	el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
	    el->el_line.lastchar, el->el_state.argument, cv__isWord);

	if (el->el_map.type == MAP_VI)
		if (el->el_chared.c_vcmd.action != NOP) {
			cv_delfini(el);
			return (CC_REFRESH);
		}
	return (CC_CURSOR);
}


/* vi_next_word():
 *	Vi move to the next word
 *	[w]
 */
protected el_action_t
/*ARGSUSED*/
vi_next_word(EditLine *el, int c __attribute__((__unused__)))
{

	if (el->el_line.cursor >= el->el_line.lastchar - 1)
		return (CC_ERROR);

	el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
	    el->el_line.lastchar, el->el_state.argument, cv__isword);

	if (el->el_map.type == MAP_VI)
		if (el->el_chared.c_vcmd.action != NOP) {
			cv_delfini(el);
			return (CC_REFRESH);
		}
	return (CC_CURSOR);
}


/* vi_change_case():
 *	Vi change case of character under the cursor and advance one character
 *	[~]
 */
protected el_action_t
vi_change_case(EditLine *el, int c)
{
	int i;

	if (el->el_line.cursor >= el->el_line.lastchar)
		return (CC_ERROR);
	cv_undo(el);
	for (i = 0; i < el->el_state.argument; i++) {

		c = *(unsigned char *)el->el_line.cursor;
		if (isupper(c))
			*el->el_line.cursor = tolower(c);
		else if (islower(c))
			*el->el_line.cursor = toupper(c);

		if (++el->el_line.cursor >= el->el_line.lastchar) {
			el->el_line.cursor--;
			re_fastaddc(el);
			break;
		}
		re_fastaddc(el);
	}
	return CC_NORM;
}


/* vi_change_meta():
 *	Vi change prefix command
 *	[c]
 */
protected el_action_t
/*ARGSUSED*/
vi_change_meta(EditLine *el, int c __attribute__((__unused__)))
{

	/*
         * Delete with insert == change: first we delete and then we leave in
         * insert mode.
         */
	return (cv_action(el, DELETE | INSERT));
}


/* vi_insert_at_bol():
 *	Vi enter insert mode at the beginning of line
 *	[I]
 */
protected el_action_t
/*ARGSUSED*/
vi_insert_at_bol(EditLine *el, int c __attribute__((__unused__)))
{

	el->el_line.cursor = el->el_line.buffer;
	cv_undo(el);
	el->el_map.current = el->el_map.key;
	return (CC_CURSOR);
}


/* vi_replace_char():
 *	Vi replace character under the cursor with the next character typed
 *	[r]
 */
protected el_action_t
/*ARGSUSED*/
vi_replace_char(EditLine *el, int c __attribute__((__unused__)))
{

	if (el->el_line.cursor >= el->el_line.lastchar)
		return CC_ERROR;

	el->el_map.current = el->el_map.key;
	el->el_state.inputmode = MODE_REPLACE_1;
	cv_undo(el);
	return (CC_ARGHACK);
}


/* vi_replace_mode():
 *	Vi enter replace mode
 *	[R]
 */
protected el_action_t
/*ARGSUSED*/
vi_replace_mode(EditLine *el, int c __attribute__((__unused__)))
{

	el->el_map.current = el->el_map.key;
	el->el_state.inputmode = MODE_REPLACE;
	cv_undo(el);
	return (CC_NORM);
}


/* vi_substitute_char():
 *	Vi replace character under the cursor and enter insert mode
 *	[s]
 */
protected el_action_t
/*ARGSUSED*/
vi_substitute_char(EditLine *el, int c __attribute__((__unused__)))
{

	c_delafter(el, el->el_state.argument);
	el->el_map.current = el->el_map.key;
	return (CC_REFRESH);
}


/* vi_substitute_line():
 *	Vi substitute entire line
 *	[S]
 */
protected el_action_t
/*ARGSUSED*/
vi_substitute_line(EditLine *el, int c __attribute__((__unused__)))
{

	cv_undo(el);
	cv_yank(el, el->el_line.buffer,
		    el->el_line.lastchar - el->el_line.buffer);
	(void) em_kill_line(el, 0);
	el->el_map.current = el->el_map.key;
	return (CC_REFRESH);
}


/* vi_change_to_eol():
 *	Vi change to end of line
 *	[C]
 */
protected el_action_t
/*ARGSUSED*/
vi_change_to_eol(EditLine *el, int c __attribute__((__unused__)))
{

	cv_undo(el);
	cv_yank(el, el->el_line.cursor,
		    el->el_line.lastchar - el->el_line.cursor);
	(void) ed_kill_line(el, 0);
	el->el_map.current = el->el_map.key;
	return (CC_REFRESH);
}


/* vi_insert():
 *	Vi enter insert mode
 *	[i]
 */
protected el_action_t
/*ARGSUSED*/
vi_insert(EditLine *el, int c __attribute__((__unused__)))
{

	el->el_map.current = el->el_map.key;
	cv_undo(el);
	return (CC_NORM);
}


/* vi_add():
 *	Vi enter insert mode after the cursor
 *	[a]
 */
protected el_action_t
/*ARGSUSED*/
vi_add(EditLine *el, int c __attribute__((__unused__)))
{
	int ret;

	el->el_map.current = el->el_map.key;
	if (el->el_line.cursor < el->el_line.lastchar) {
		el->el_line.cursor++;
		if (el->el_line.cursor > el->el_line.lastchar)
			el->el_line.cursor = el->el_line.lastchar;
		ret = CC_CURSOR;
	} else
		ret = CC_NORM;

	cv_undo(el);

	return (ret);
}


/* vi_add_at_eol():
 *	Vi enter insert mode at end of line
 *	[A]
 */
protected el_action_t
/*ARGSUSED*/
vi_add_at_eol(EditLine *el, int c __attribute__((__unused__)))
{

	el->el_map.current = el->el_map.key;
	el->el_line.cursor = el->el_line.lastchar;
	cv_undo(el);
	return (CC_CURSOR);
}


/* vi_delete_meta():
 *	Vi delete prefix command
 *	[d]
 */
protected el_action_t
/*ARGSUSED*/
vi_delete_meta(EditLine *el, int c __attribute__((__unused__)))
{

	return (cv_action(el, DELETE));
}


/* vi_end_big_word():
 *	Vi move to the end of the current space delimited word
 *	[E]
 */
protected el_action_t
/*ARGSUSED*/
vi_end_big_word(EditLine *el, int c)
{

	if (el->el_line.cursor == el->el_line.lastchar)
		return (CC_ERROR);

	el->el_line.cursor = cv__endword(el->el_line.cursor,
	    el->el_line.lastchar, el->el_state.argument, cv__isWord);

	if (el->el_chared.c_vcmd.action != NOP) {
		el->el_line.cursor++;
		cv_delfini(el);
		return (CC_REFRESH);
	}
	return (CC_CURSOR);
}


/* vi_end_word():
 *	Vi move to the end of the current word
 *	[e]
 */
protected el_action_t
/*ARGSUSED*/
vi_end_word(EditLine *el, int c __attribute__((__unused__)))
{

	if (el->el_line.cursor == el->el_line.lastchar)
		return (CC_ERROR);

	el->el_line.cursor = cv__endword(el->el_line.cursor,
	    el->el_line.lastchar, el->el_state.argument, cv__isword);

	if (el->el_chared.c_vcmd.action != NOP) {
		el->el_line.cursor++;
		cv_delfini(el);
		return (CC_REFRESH);
	}
	return (CC_CURSOR);
}


/* vi_undo():
 *	Vi undo last change
 *	[u]
 */
protected el_action_t
/*ARGSUSED*/
vi_undo(EditLine *el, int c __attribute__((__unused__)))
{
	c_undo_t un = el->el_chared.c_undo;

	if (un.len == -1)
		return CC_ERROR;

	/* switch line buffer and undo buffer */
	el->el_chared.c_undo.buf = el->el_line.buffer;
	el->el_chared.c_undo.len = el->el_line.lastchar - el->el_line.buffer;
	el->el_chared.c_undo.cursor = el->el_line.cursor - el->el_line.buffer;
	el->el_line.limit = un.buf + (el->el_line.limit - el->el_line.buffer);
	el->el_line.buffer = un.buf;
	el->el_line.cursor = un.buf + un.cursor;
	el->el_line.lastchar = un.buf + un.len;

	return (CC_REFRESH);
}


/* vi_command_mode():
 *	Vi enter command mode (use alternative key bindings)
 *	[<ESC>]
 */
protected el_action_t
/*ARGSUSED*/
vi_command_mode(EditLine *el, int c __attribute__((__unused__)))
{

	/* [Esc] cancels pending action */
	el->el_chared.c_vcmd.action = NOP;
	el->el_chared.c_vcmd.pos = 0;

	el->el_state.doingarg = 0;

	el->el_state.inputmode = MODE_INSERT;
	el->el_map.current = el->el_map.alt;
#ifdef VI_MOVE
	if (el->el_line.cursor > el->el_line.buffer)
		el->el_line.cursor--;
#endif
	return (CC_CURSOR);
}


/* vi_zero():
 *	Vi move to the beginning of line
 *	[0]
 */
protected el_action_t
vi_zero(EditLine *el, int c)
{

	if (el->el_state.doingarg)